March



Jan. 15, 1924.

A. B. CLEWORTH APPARATUS FOR TREATING GASES WITH LIQUIDS Filed Aug. 6. 1920 Patented Jan, 15, 1924.

UNITED STATES ALFRED B. CLEWORTH, 0F I-IOLLINWOOD, ENGLAND.

APPARATUS FOR TREATING GASES W'ITH LIQUIDS.

AppIication filed August 6, 1920. serial No. 1201,?62.

(GRANTED UNDER rm: rnovlsrons on THE ACT or MARCH a, 1921, 41 star. a, 1313.

To all whom it may concern:

Be it known that I, ALFRED BUTTERWORTH Cnnwon'rrr, a subject of the King of Great Britain, residing in Hollinwood, England, have invented certain new and useful 1m pro'vements in Apparatus for Treating Gases with Liquids, of which the following is a specification.

My present invention relates to apparatus which is employed for wet filtering or otherwise treating air or gas with liquid and is of the kind comprising a chamber containii'ig a screen which serves as the operative medium and is fixed within the chan'iber and is kept thoroughly wetted with the liquid by means of a suitable distributing device and is constructed of metal and with numerous slits or apertures through which the air or gas entering the chamber on one side oi? the screen, is caused to pass by the action of a :fan or equivalent appliance, while flowing towards an outlet from the chamber disposed on the other side of the sheets.

The invention consists in forming the screen of a nlnnber of sheets or units of ex panded. metal, constructed in a manner similar to the rotatable expanded metal. disks or sheets which are described in U. S. Letters Patent No. 1,345,131, granted to me June 29, .1920 in which the sheets are provided with apertures, the metal strips between said apertures being inclined to the plane of the taco oi? the sheet, and in substantially the same direction.

The expanded metal sheets may be inclined to the projected or descending drops or s reams oi: liquid or water, at any angle between. the vertical and horizoi'ital, includ ing the latter.

Thesheets are preferably arranged, as is customary, transverse to the current of air.

By increasing the number of sheets in a screen a greater filtering or operative effect is obtained.

in co-operation with the apparatus comprising the parts above referred to, I may employ, when necessary, a pumping device for returning the liquid or water that collects in the bottom oi the chamber or casing, to the distributing device and ensuring a proper circulation.

I will describe my invention further with reference to the accompanying drawing in which the sole figure is a section of one form of the apparatus, the screen being horizontal or substantially so.

In the drawing 1 denotes the casing of a chamber A in which a screen B formed of a number of sheets or units 2 of expanded metal are disposed. C is fan by which a current of air or gas is drawn into or forced through the chamber, the tan being rotatably supported in a suitable manner on a bracket 3 attached to the chamber side wall or casing. D denotes a pump for removing the liquidirom the bottom of the chamber A and returning it to a distributing device hereafter referred to. Appropriate means may be provided for operating the tan and pump, and may, for instance, comprise a pulley a driven from any source of power for driving the tan and pulleys 5 and 6 and belt 7 for the pump.

In the arrangement shown in the sole figure, the sheets 2 constituting the screen B are arranged horizontally or transversely to the descending drops or streams o1 liquid, or substantially so. The several. sheets are spaced apart in known manner by means of tubular distance pieces 8' and bolts or equivalent members 9, and are held together by means of plates 10 which may be of angle or channel section and clamped against the outside sheets, as shown, by bolts passing through the distance pieces 8. The angle and channel plates also serve to support the screen in position, for which purpose the plates may be suitably connected to the easing 1 or be appropriately supported there from.

Liquid is distributed over the screen by means of the pipe 12 communicating with pump D. The portion of this pipe within the chamber A is provided with a number of subsidiary pipes 12 which would be perforated or fitted with nozzles. Alternatively, the pipe 12 may connect in known manner with a branch pipe disposed inside or outside the chamber A from which branch pipe may extend across the chamber and above the screen a number of stationary or rotatable distributing pipes. It may be advantageous to use a system of troughs or sprays similar to those shown in Fig. 1..

In the arrangementshown in the figure air or gas enters the chamber A through inlets 1 below the sheets 2, is drawn through.

these latter by the fan C and passes out through the outlets l Having thus described the nature of the said invention and the best means I know of carrying the same into practical effect, I claim An apparatus for. treating air or gas with liquid comprising walls enclosing a chamber, said chamber being provided with air or gas inlet and outlet openings, means for causing a current of air or gas to traverse said chamber from said inlet to said outlet opening, a screen unit fixed within said chamber and in the path of said air or gas current, said screen unit being formed from a sheet of metal provided with openings, the strips of metal between said openings being inclined to the plane of the face of said sheet in the same direction, and means for distributing liquid upon one face of said sheet.

In testimony whereof I have signed my name to this specification.

ALFRED B. CLEWORTH. 

